Soundproof enclosure



FIG. 1 is a perspective view of a soundproof enclosure illustrated in its closed position, showing my new design;

FIG. 2 is a right side elevation view of the soundproof enclosure of FIG. 1, the left side elevation view being a mirror image thereof;

FIG. 3 is a top plan view of the soundproof enclosure of FIG. 1;

FIG. 4 is a bottom plan view of the soundproof enclosure of FIG. 1;

FIG. 5 is a front elevation view of the soundproof enclosure of FIG. 1;

FIG. 6 is a rear elevation view of the soundproof enclosure of FIG. 1; and,

FIG. 7 is a perspective view of the soundproof enclosure of FIG. 1 in its open position. 

The ornamental design for a soundproof enclosure, as shown and described. 